Keyboard Input Getter

var xVel = 0;
var yVel = 0;
var keys = [false, false, false, false];
// keys is an array that represents whether a certain
// key is currently pressed
// keys[0] -> left
// keys[1] -> right
// keys[2] -> up
// keys[3] -> down
onEvent("button1", "click", function(event) {
  setScreen("screen2");
  timedLoop(17, function() {
    xVel = 0;
    yVel = 0;
    if (keys[0]) {
      xVel += -5;
    }
    if (keys[1]) {
      xVel += 5;
    }
    if (keys[2]) {
      yVel += -5;
    }
    if (keys[3]) {
      yVel += 5;
    }
    setPosition("image1", getXPosition("image1")+xVel, getYPosition("image1")+yVel);
  });
});
onEvent("screen2", "keydown", function(event) {
  if (event.key == "Up") {
    keys[2] = true;
  } else if ((event.key == "Down")) {
    keys[3] = true;
  } else if ((event.key == "Left")) {
    keys[0] = true;
  } else if ((event.key == "Right")) {
    keys[1] = true;
  }
});
onEvent("screen2", "keyup", function(event) {
  if (event.key == "Up") {
    keys[2] = false;
  } else if ((event.key == "Down")) {
    keys[3] = false;
  } else if ((event.key == "Left")) {
    keys[0] = false;
  } else if ((event.key == "Right")) {
    keys[1] = false;
  }
});




//
//
//
//modified vesion for pen up and down
//
//
onEvent("button10", "click", function(event) {
  timedLoop(17, function() {
    xVel = 0;
    yVel = 0;
    if (keys[0]) {
      xVel += -5;
    }
    if (keys[1]) {
      xVel += 5;
    }
    if (keys[2]) {
      yVel += -5;
    }
    if (keys[3]) {
      yVel += 5;
    }
    moveTo(getX()+xVel, getY()+yVel);
  });
});
onEvent("screen2", "keydown", function(event) {
  if (event.key == ("w" || "Up")) {
    keys[2] = true;
  } else if ((event.key == ("s" || "Down"))) {
    keys[3] = true;
  } else if ((event.key == ("a" || "Left"))) {
    keys[0] = true;
  } else if ((event.key == ("d" || "Right"))) {
    keys[1] = true;
  }
});
onEvent("screen2", "keyup", function(event) {
  if (event.key == ("w" || "Up")) {
    keys[2] = false;
  } else if ((event.key == ("s" || "Dowm"))) {
    keys[3] = false;
  } else if ((event.key == ("a" || "Left"))) {
    keys[0] = false;
  } else if ((event.key == ("d" || "Right"))) {
    keys[1] = false;
  }
});